"Usually refers to hair extensions that are attached to your natural hair using clips or clips-in extensions. These are a popular and convenient way to add length, volume, or different hairstyles to your hair without the need for permanent bonding methods like glue or sewing. Clip-in hair extensions typically come in wefts or strips of hair that have clips attached to them. You can open the clips and snap them onto your natural hair, close to the roots, to secure the extension in place. They are easy to apply and remove, making them a temporary and non-damaging option for hair enhancement."